Use vec$(u)=($:$4,-3,-4$:$)$ and vec$(v)=($:$3,-2,5$:$),$ and vec$(w)=($:$-3,5,0$:$)$ for problems $1-6.$Find vec$(u)$vec$(v)$

Find the angle between vec$(u)$ and vec$(v).$

How is the orientation of vec$(u)$vec$(v)$ compared to vec$(u)$ and vec$(v)?$